Pipe-coupling.



1. P. STRIGKLER.

PIPE COUPLING. M APPLICATION FILED FEB.17, 1911 1,007,989. Patented Nov.*7, 1911.

COLUMBIA PLANOGRAPH co., WASHINGTON. 12. c.

UNITED sTAtrEs PATENT OFFICE.

JAMES P. STRICKLER, OF COLUMBUS, OHIO.

PIPE-COUPLING.

To all whom it may concern:

Be it known that I, JAMES P. STRIoKLEn, a citizen of the United States,residing at Columbus, in the county of Franklin and State of Ohio, haveinvented certain new and useful Improvements in Pipe-Couplings, of whichthe following is a specification.

This invention relates to an improved form of pipe coupling, and isparticularly designed to connect the abutting ends of conduit pipes insuch a manner that a fluidtight structure is provided and one which isincapable of longitudinal movement when once placed in positionconnecting said pipes.

It is further aimed by this particular structure of pipe coupling torender the same applicable with the least possible delay 1 and withgreatest facility.

The preferred embodiment of the inven ti on is shown in the accompanyingdrawings, in which- Figure 1 is an end View of the pipe cou-- pling inapplied position, Fig. 2 is a longitudinal section taken on line 22 ofFig. 1, Fig. 3 is a detail view of one of the rings utilized for lockingthe pipe coupling in place, Fig. i is a view partly in section of theembracer used complementally with these rings, and, Fig. 5 is a viewsimilar to Fig. 3, of the ring used in conjunction with the opposing endof the embracer.

Referring specifically to the different figures of the drawing, in whichsimilar characters of reference designate corresponding parts, asurrounding ring 1 is provided to receive the ends of the pipes 2 and 3.This ring is flared outwardly at either end as at 4 and is provided atan approximately central point with a series of lugs or struckupportions It will be apparent that the struck-up portions 5 serve thepurpose of centering the pipe ends within the ring 1. Adapted to fitwithin the flared ends of the ring 1 and in contact wit-h the pipes 2and 3 are annular washers 6 and 7 of any compressible material. Thesewashers are preferably of wedge form. Fit-ting upon the ends of the ring1 are caps S and 9 preferably L-shaped in cross section and having theshorter legs of said L abutting the outer ends of the washers 6 and 7.Said caps (3 and 7 are each provided with a plurality of inclined planes10 and 11. spaced apart.

Specification of Letters Patent.

Application filed February 1'7, 1911.

Patented Nov. *7, 1911.

Serial No. 609,161.

Cooperating with said caps is an embracer ring 12 provided with inwardlyextending lugs 13 spaced similarly to the interruptions between theinclined planes 10 and 11. The embracer ring is preferably provided withcut-away portions 14 in its periphery to facilitate rotation of the sameby a wrench of any type. It is desirable that a set screw 15 be threadedinto the thickened ring 12 in such a position that it may be screweddownwardly into frictional abutment with the periphery of one of theinclined planes.

The operation is as follows: The ring 1 is fitted upon the abutting endsof the pipes 2 and 3, the lugs 5 serving to center these abutting endsproperly and at the same time the washers 6 and 7 having been placedbeneath the flared portions of the ring and the caps 8 and 9 being inplace in contact therewith, the embracer ring is held in a centralposition. The ring caps 6 and 7 are then moved longitudinally upon thepipe, causing the lugs 13 to pass between the inclined portions. Theembracer ring 12 is then rotated and the contact of the lugs 18 with theinclined planes 10 and 11 serve to draw the ring caps into compressingrelation with the washers (3 and 7. Thus the pipes have their abuttingends brought into a fluid-tight contact with a maximum rapidity.

The great difficulty in the production of a perfect pipe-coupling is,and has always resided, in the danger of a blow-out. This danger is veryreal and is well understood and recognized to be a prime factor forconsideration in pipe couplings. The cause of a blow-out is necessarilythe existence, in the pipe coupling, of some weak point, that is, somepoint which is weak in comparison with the other structural features ofthe pipe coupling. It has long been known in the art that theutilization of a multiple bolt structure, is necessarily subject to thedrawback that it is practically impossible to operate the bolts in amanner to attain a perfectly equal co1n )ression. Consequently, someonebolt exercises a degree of stress considerably less than the otherbolts, with the result that this relatively weak point is gradually madeweaker in constant use, until the blow-out occurs. ith my structure, thepressure upon the packing is necessarily equal at every point, becauseof the simul taueously operative. inclined planes and the gaskets arecompressed gradually but firmly in an even manner by the wedge action ofthese planes.

A further important feature of my invention rests in the fact that thecompression collars do not turn upon the gaskets and there is,consequently, no shearing effect on said gaskets. Practical workers inthe art well understand the advantage of doing away with this shearingeffect.

What I claim, is

1. A pipe coupling comprising an embracing ring for receiving theabutting ends of pipes, ring caps fitting over the ends of said ring,washers interposed there-between, a sleeve fitting over said ring caps,and complemental lugs and inclined planes for drawing said ring capsinto position to compress said Washers.

2. A pipe coupling comprising a ring having its ends outwardly flared,washers fitting Within said flared portions and in contact with thepipes, ring caps embracing said washers, there being inclined planesformed in series upon said ring caps, an embracing ring for said ringcaps, and lugs upon said embracing ring adapted to cooperate with saidinclined planes for forcing said washers into operative relation.

3. A pipe coupling comprising a ring, a central series of lugs annularlydisposed Within said ring, said ring having outwardly flared ends,washers fitting within said outwardly flared ends, ring caps fittingupon said Washers, there being a series of spaced inclined planes uponthe outer periphery of said ring caps, an embracing sleeve for said ringcaps, lugs internally formed on said sleeve and properly spaced to passbetween said inclined planes whereby rotation of said embracing sleevewill draw said ring caps together to compress said washers.

4. A pipe coupling'comprising a cylindrical ring of imperforatematerial, and a centrally positioned internal tangular rib formed onsaid ring, flaring ends for said ring, gaskets fitting in said flaringends, washer rings on the pipes and abutting said gaskets, inwardlyextending body portions on said rings, spaced lugs on the inwardlyextending body portions and formed with wedge inclines, a centralembracing yoke, internal lugs on said yoke formed with rounded edges andadapted to move upon the said inclines to draw said rings intoconipressing relation with saic gaskets.

A pipe coupling comprising a cylindrical ring with flared ends, packingwithin said ends, compression collars abutting said packing, anembracing yoke and means on said yoke and collars for forcing saidcollars into compressing action against said packing without rotation ofsaid collars when said yoke is bodily rotated.

6. A pipe coupling comprising a cylindrical ring adapted to haveinserted therein the ends of the pipes to be coupled, said ring havingflaring ends, gaskets fitting in said flaring ends, washer ringscomprising vertical portions which bear against said gaskets andhorizontal portions which extend inwardly over the ends of said ring,spaced lugs carried by the horizontal portions of the washer rings'andhaving inclined outer faces, a yoke member embracing the firs named ringand the washer rings, and inwardly extending lugs carried by said yokemember which engage with the inclined faces of the spaced lugs of thewasher rings whereby when the yoke member is rotated the washer ringsare forced toward each other to compress the gaskets.

In testimony whereof I aflix my signature in presence of two witnesses.

JAMES P. STRICKLER.

VVit-nesses A. L. PHELPS, JOHN H. EAGLESON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

